1.3.2
* Starting support for ARM platforms (not optimized yet)
* Added a FlushToZero class used in Python interface so that it is activated when process() is called

1.3.1
* Added a 1 – input filter with Python wrappers
* Removed the old SD1 filter, replaced it definitely with the SVF version
* Added a TS9 overdrive filter (SD1 without the asymmetry) with Python wrappers
* Added a Tube2Filter with wrappers, adding the plate-grid capacitor in the equations, stabilizing them better (requires Eigen)